Docker

Deploy FastAPI with Docker (Summary)

📁 Project Structure

my_fastapi_app/ ├── app.py ├── requirements.txt └── Dockerfile

---

🧱 app.py

from fastapi import FastAPI
app = FastAPI()

@app.get("/")
def read_root():
    return {"message": "Hello from FastAPI in Docker"}

📦 requirements.txt

fastapi
uvicorn
gunicorn

🐋 Dockerfile

FROM python:3.10-slim

WORKDIR /app

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY . .

CMD ["gunicorn", "-w", "4", "-k", "uvicorn.workers.UvicornWorker", "app:app"]

🔧 Build Docker Image

docker build -t my-fastapi-app .

🚀 Run the Container

docker run -d -p 8000:8000 my-fastapi-app

• Visit: http://localhost:8000
• You’ll see: {"message": "Hello from FastAPI in Docker"}